The form remains valid unless you revoke it by: signing another Health Care Proxy form at a later date; legally separating from or divorcing your spouse and your spouse is named as your Agent; notifying your Agent, your doctor, or other health care provider, orally or in writing, that you want to revoke your Health Care Proxy, or doing anything else that clearly shows that you want to revoke the Proxy, for example, tearing up or destroying the Proxy, crossing it out, etc.
This article is intended to be helpful and informative. But even common legal matters can become complex and stressful. A qualified estate planning lawyer can address your particular legal needs, explain the law, and represent you in court. Take the first step now and contact a local estate planning attorney to discuss your specific legal situation.